Ore-classifying table



w. c. TRACY ORE GLASSIFYING TABLE Feb. 23 1926. 1,574,316

Original Filed March 2'7. 1924 gwwmtaz Patented Feb. 23, 1926.

.UNLTED- STATES 1 1,574,316 PATENT eer e.

WARREN C. TRACY, 0 LOS ANGELES, CALIFORNIA.

ORE-CLASSIFYING TABLE.

Application filed March 2'7, 1924, Serial No. 762,231. RenewedJanuaryfi, 1928.

State of California, have invented a new the following is aspecification.

This invention relates to ore classifying tables and is moreparticularly directed to such a table having a new and novel arrangementof riflles or grooves for the purpose of separating the very fineportions of the valuable ores from the, tailings.

Ore classifying tables as heretofore designed have had rifiies orgrooves substantially V-shaped cut in the surface of the table or inthecovering of the table, at an angle to the vertical plane of the edgeof the table. An ore classifying table with riflies of this sort hasproven' satisfactory for the separation of the coarse heavy ores fromthe tailings, but agreat deal of the very finely divided valuable ores,such as copper, silver, gold and lead, have passed and usefulOre-Classifying Table, of which with the tailings over such tables andbeen.

and pass out from the table with thetailings; also this inventionrelates to a manner of direction of a second set of grooves or rifllescut in the above manner, which grooves are cut at the upper end of thetable parallel to the plane of the vertical edge of the table.

An object of this invention may be to provide a set of grooves parallelto the edge of the table and having inter-communicating veins for thepurpose of separating the valuable ores from. the tailings at the top ofthe table.

An object of this invention may be to provide grooves or riflies of thenature heretofore described for the purpose of obtaining a completeseparation of the fine portions of the valuable ores from the tailings.

Other objects and advantages of this invention will be apparent from thefollowing detailed description of a preferredembodithe edge of thetable.

ment thereof, as set forth in the accompanying drawings.

In the drawings: Figure 1 is a plan view of an ore classi-. fying tableembodyingthis invention, showing the feed trough partly broken away.fFig. 2 is a side elevation partly in section 0 of an eccentric yokeconnected to the table top l, as illustrated'at 5. Flexible means suchas the spring 6 connects the eccentric yoke 1 to the table top 1. Theeccentric mechanism is. driven from any suitable source transmittingpower to the belt.

pulley 7 I At the lower or frontedge of :the table there is provided atrough 8 to receive the water and tailings from the table top 1.- A

trough 9 is provided at the far end of the table for receiving the oreseparated from the tailings.

The material to be classified is first finely ground and admitted into aform Ofjhopper 10 which receives water from any suitable source, asillustrated at 11. A trough 12' is connected to the member 10 and has anumber of gate valves 13 positioned upon the upper end thereof so thatthe ore and the water are carried out toward the back edge 14: of thetable top 1. The table top 1 is faced with any suitable material 15,which material 15 maybe linoleum, leather, or like material.

'Rifl'les 16 having a vertical side or edge 17 and a sloped edge 18 arecut in the table. top at an angle to the plane of the edge'of the table,preferably diverging from the top upper edge at a slight angle towardthe bottom or lower edge. A second series of rifiies 19 of the same formas the rifiles 16 are cut at the upper edge of the table top cover 15substantially parallel to the vertical plane of A number ofintercornmunicating veins or riflles 20 are out bethe ore classifyingtable illustrated in struction are recovered in the rifiies 16 andtravel along the riflies 16 to the edge of the table and are dischargedinto the trough 9, where they may be collected and saved for separationof the ores and smelting or the,

like; it being understood that the table top 1 is slanted or sloped fromthe upper edge 14 to the lower edge so that the water and tailings willtravel across the table and be carried away in the trough 8. A jack orsuitable means may be provided at or under the upper edge 14: of thetable top 1 to vary this angle of slope, as the particular ore mayrequire.

In order to recover the slime containing considerable other valuableores, applicant has discovered that by extending a pair of cords 21diagonally across the table, as illustrated in Figure 1, the slime willbe removed from the top of the water flowing across the top of the tableand will be diverted by the cords 21 into the trough 9 or other suitableslime recovering apparatus which may be embodied in connection with thisore classifying table. It willbe understood that the cords 21 are raisedfrom the I table to a proper height to ride on the surface of the watertraveling across the table top 1.

Having fully described a preferred embodiment of this invention, it isto be understood that I do not Wish to be limited to the exactconstruction, form or shape of the rifiles heretofore set forth, whichmay obviously be varied within the spirit of this invention, as setforth in the appended claims.

I claim 1. An ore classifying table of the class described comprising atable top, supports for the table top, means for reciprocating the tabletop in relation to the supports, a cover for the said table top, therebeing rifiles in the table top at an angle to the direction ofreciprocation of the table top,

there being rifiles in the table top substantially parallel to thedirection of reciprocation of the table top, and inter-communicatingveins or riflles in the table top between the said parallel rifiles.

2. An ore classifying table of the class described comprising a tabletop, supports for thetable top, means for reciprocating the table top inrelation to the supports, a cover for the table top, there being rifilesin the table top cover at an angle to the direction of reciprocation ofthe table top, there being riftles at the upper edge of the table topcovering substantially parallel to the direction of reciprocation of thetable top, said rifiles having a vertical side and a sloping sidesubstantially as and for the purposes described, and veins or rifilesfor communication between the said parallel rifiies substantially asheretofore set forth.

3. In an ore classifying table of the class described, the combinationof a table top, supports for the table top, means for reciprocating thetabletop in relation to the supports, a cover secured to the said tabletop, riffles cutin the table to cover at an angle to the vertical planeof the edge of the table, riflles cut in the table covering at the upperedge of the table substantially parallel to the vertical plane of theedge of the table, and cords extending diagonally across the table topat a distance above the table top substantially as and for the purposedescribed.

4. In an ore classifying table of the class described, the combination'of a table top, means for imparting a reciprocatory motion to the tabletop and cords extending diagonally across the table top at a distanceabove the table top. I

5. An ore classifying table of the class described, comprising a tabletop, a covering secured to the table top, means for supporting the tabletop, means for imparting a reciprocatory motion to the table top, therebeing riflies in the table top at an angle to the direction ofreciprocation of the table top, 'rifiles in the table top substantiallyparallel to the direction of reciprocation of the table top, and cordsextending diagonally across the table top at a distance above the tabletop.

Signed at Los Angeles, California, this 18th day of March, 1924.

WARREN C. TRACY.

